<?php
/*
 * Copyright (C) 2016 Xebax Christy <xebax@wanadoo.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

use Luracast\Restler\RestException;

require_once DOL_DOCUMENT_ROOT.'/compta/bank/class/account.class.php';

/**
 * API class for accounts
 *
 * @access protected
 * @class DolibarrApiAccess {@requires user,external}
 */
class BankAccounts extends DolibarrApi
{

    /**
     * array $FIELDS Mandatory fields, checked when creating an object
     */
    static $FIELDS = array(
        'ref',
        'label',
        'type',
        'currency_code',
        'country_id'
    );

    /**
     * Constructor
     */
    function __construct()
    {
        global $db;
        $this->db = $db;
    }

    /**
     * Get the list of accounts.
     *
     * @param string    $sortfield  Sort field
     * @param string    $sortorder  Sort order
     * @param int       $limit      Limit for list
     * @param int       $page       Page number
     * @param string    $sqlfilters Other criteria to filter answers separated by a comma. Syntax example "(t.ref:like:'SO-%') and (t.import_key:<:'20160101')"
     * @return array                List of account objects
     *
     * @throws RestException
     */
    function index($sortfield = "t.rowid", $sortorder = 'ASC', $limit = 0, $page = 0, $sqlfilters = '')
    {
        $list = array();

        if(! DolibarrApiAccess::$user->rights->banque->lire) {
            throw new RestException(401);
        }

        $sql = "SELECT rowid FROM ".MAIN_DB_PREFIX."bank_account as t";
        $sql.= ' WHERE t.entity IN ('.getEntity('bank_account', 1).')';
        // Add sql filters
        if ($sqlfilters) 
        {
            if (! DolibarrApi::_checkFilters($sqlfilters))
            {
                throw new RestException(503, 'Error when validating parameter sqlfilters '.$sqlfilters);
            }
            $regexstring='\(([^:\'\(\)]+:[^:\'\(\)]+:[^:\(\)]+)\)';
            $sql.=" AND (".preg_replace_callback('/'.$regexstring.'/', 'DolibarrApi::_forge_criteria_callback', $sqlfilters).")";
        }
        
        $sql.= $this->db->order($sortfield, $sortorder);
        if ($limit)    {
            if ($page < 0)
            {
                $page = 0;
            }
            $offset = $limit * $page;
        
            $sql.= $this->db->plimit($limit + 1, $offset);
        }
        
        dol_syslog("API Rest request");
        $result = $this->db->query($sql);

        if ($result) {
            $num = $this->db->num_rows($result);
            $min = min($num, ($limit <= 0 ? $num : $limit));
            for ($i = 0; $i < $min; $i++) {
                $obj = $this->db->fetch_object($result);
                $account = new Account($this->db);
                if ($account->fetch($obj->rowid) > 0) {
                    $list[] = $this->_cleanObjectDatas($account);
                }
            }
        } else {
            throw new RestException(503, 'Error when retrieving list of accounts: ' . $this->db->lasterror());
        }

        return $list;
    }

    /**
     * Get account by ID.
     *
     * @param int    $id    ID of account
     * @return array Account object
     *
     * @throws RestException
     */
    function get($id)
    {
        if (! DolibarrApiAccess::$user->rights->banque->lire) {
            throw new RestException(401);
        }

        $account = new Account($this->db);
        $result = $account->fetch($id);
        if (! $result) {
            throw new RestException(404, 'account not found');
        }

        return $this->_cleanObjectDatas($account);
    }

    /**
     * Create account object
     *
     * @param array $request_data    Request data
     * @return int ID of account
     */
    function post($request_data = null)
    {
        if (! DolibarrApiAccess::$user->rights->banque->configurer) {
            throw new RestException(401);
        }
        // Check mandatory fields
        $result = $this->_validate($request_data);

        $account = new Account($this->db);
        foreach ($request_data as $field => $value) {
            $account->$field = $value;
        }
        // Date of the initial balance (required to create an account).
        $account->date_solde = time();
        // courant and type are the same thing but the one used when
        // creating an account is courant
        $account->courant = $account->type;

        if ($account->create(DolibarrApiAccess::$user) < 0) {
            throw new RestException(500, 'Error creating bank account', array_merge(array($account->error), $account->errors));
        }
        return $account->id;
    }

    /**
     * Update account
     *
     * @param int    $id              ID of account
     * @param array  $request_data    data
     * @return int
     */
    function put($id, $request_data = null)
    {
        if (! DolibarrApiAccess::$user->rights->banque->configurer) {
            throw new RestException(401);
        }

        $account = new Account($this->db);
        $result = $account->fetch($id);
        if (! $result) {
            throw new RestException(404, 'account not found');
        }

        foreach ($request_data as $field => $value) {
            if ($field == 'id') continue;
            $account->$field = $value;
        }

        if ($account->update(DolibarrApiAccess::$user) > 0)
            return $this->get($id);

        return false;
    }

    /**
     * Delete account
     *
     * @param int    $id    ID of account
     * @return array
     */
    function delete($id)
    {
        if (! DolibarrApiAccess::$user->rights->banque->configurer) {
            throw new RestException(401);
        }
        $account = new Account($this->db);
        $result = $account->fetch($id);
        if (! $result) {
            throw new RestException(404, 'account not found');
        }

        if ($account->delete(DolibarrApiAccess::$user) < 0) {
            throw new RestException(401, 'error when deleting account');
        }

        return array(
            'success' => array(
                'code' => 200,
                'message' => 'account deleted'
            )
        );
    }

    /**
     * Validate fields before creating an object
     *
     * @param array|null    $data    Data to validate
     * @return array
     *
     * @throws RestException
     */
    function _validate($data)
    {
        $account = array();
        foreach (Accounts::$FIELDS as $field) {
            if (! isset($data[$field]))
                throw new RestException(400, "$field field missing");
            $account[$field] = $data[$field];
        }
        return $account;
    }

    /**
     * Clean sensible object datas
     *
     * @param object    $object    Object to clean
     * @return array Array of cleaned object properties
     */
    function _cleanObjectDatas($object)
    {
        $object = parent::_cleanObjectDatas($object);

        unset($object->rowid);

        return $object;
    }

    /**
     * Get the list of lines of the account.
     *
     * @param int $id ID of account
     * @return array Array of AccountLine objects
     *
     * @throws RestException
     *
     * @url GET {id}/lines
     */
    function getLines($id)
    {
        $list = array();

        if (! DolibarrApiAccess::$user->rights->banque->lire) {
            throw new RestException(401);
        }

        $account = new Account($this->db);
        $result = $account->fetch($id);
        if (! $result) {
            throw new RestException(404, 'account not found');
        }

        $sql = "SELECT rowid FROM ".MAIN_DB_PREFIX."bank ";
        $sql .= " WHERE fk_account = ".$id;
        $sql .= " ORDER BY rowid";

        $result = $this->db->query($sql);

        if ($result) {
            $num = $this->db->num_rows($result);
            for ($i = 0; $i < $num; $i++) {
                $obj = $this->db->fetch_object($result);
                $accountLine = new AccountLine($this->db);
                if ($accountLine->fetch($obj->rowid) > 0) {
                    $list[] = $this->_cleanObjectDatas($accountLine);
                }
            }
        } else {
            throw new RestException(503, 'Error when retrieving list of account lines: ' . $accountLine->error);
        }

        return $list;
    }

    /**
     * Add a line to an account
     *
     * @param int    $id            ID of account
     * @param int    $date          Payment date (timestamp) {@from body} {@type timestamp}
     * @param string $type          Payment mode (TYP,VIR,PRE,LIQ,VAD,CB,CHQ...) {@from body}
     * @param string $label         Label {@from body}
     * @param float  $amount        Amount (may be 0) {@from body}
     * @param int    $category      Category
     * @param string $cheque_number Cheque numberl {@from body}
     * @param string $cheque_writer Name of cheque writer {@from body}
     * @param string $cheque_bank   Bank of cheque writer {@from body}
     * @return int  ID of line
     *
     * @url POST {id}/lines
     */
    function addLine($id, $date, $type, $label, $amount, $category=0, $cheque_number='', $cheque_writer='', $cheque_bank='')
    {
        if (! DolibarrApiAccess::$user->rights->banque->modifier) {
            throw new RestException(401);
        }

        $account = new Account($this->db);
        $result = $account->fetch($id);
        if (! $result) {
            throw new RestException(404, 'account not found');
        }

        $result = $account->addline($date, $type, $label, $amount, $cheque_number, $category,
                                    DolibarrApiAccess::$user, $cheque_writer, $cheque_bank);
        if ($result < 0) {
            throw new RestException(503, 'Error when adding line to account: ' . $account->error);
        }
        return $result;
    }

    /**
     * Add a link to an account line
     *
     * @param int    $account_id    ID of account
     * @param int    $line_id       ID of account line
     * @param int    $url_id        ID to set in the URL {@from body}
     * @param string $url           URL of the link {@from body}
     * @param string $label         Label {@from body}
     * @param string $type          Type of link ('payment', 'company', 'member', ...) {@from body}
     * @return int  ID of link
     *
     * @url POST {account_id}/lines/{line_id}/links
     */
    function addLink($account_id, $line_id, $url_id, $url, $label, $type)
    {
        if (! DolibarrApiAccess::$user->rights->banque->modifier) {
            throw new RestException(401);
        }

        $account = new Account($this->db);
        $result = $account->fetch($account_id);
        if (! $result) {
            throw new RestException(404, 'account not found');
        }

        $accountLine = new AccountLine($this->db);
        $result = $accountLine->fetch($line_id);
        if (! $result) {
            throw new RestException(404, 'account line not found');
        }

        $result = $account->add_url_line($line_id, $url_id, $url, $label, $type);
        if ($result < 0) {
            throw new RestException(503, 'Error when adding link to account line: ' . $account->error);
        }
        return $result;
    }
}
